Steel boiler



Aug. 13, 1935. w $M|TH I 2,011,164

STEEL BOILER Filed June 12, 1954 2 Sheets-Sheet l lliiilllll 1% :III

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I v @UZ 5%), 77 Z ATTORN EY Aug. 13, 1935. G sMlTH 2,011,164

.STEEL BOILER Filed June 12, 1934 2 Sheets-Sheet 2 INVENTOR bwwma/wr/x.

ATTO NEY Patented Aug. 13, 1935 nsan G. Smith, Chinchilla-Pa.Application time, 1934,.sriai $1730.17? stains. (01.122942 A p p burningfurnace without departure from the scope r L inventionrelates to a newand useful steel boiler; that is a boiler which can be fabricated incomplete, relatively small, independent units,

.Which are adapted to be easily and quickly-assem- ;b1ed on location,thereby. permitting. the installa- ..tion;of relatively largeboilers inbuildings having small entrances, theboiler being taken .into thebuilding in preassembled'sections and thenassem- ,1bled. V ,j W 31R My.invention still further relates to: a steel boiler of thischaracterpwhereby I" combine the advantages of a water tube-and a firetube boiler ,in .one construction, thereby greatlyincreasing theefiiciency and utility of the boilerfi :1 Myinvention still furtherrelates'to a novel steel boiler of thecharacter described, in whichthefire andqthe heated products of combustion areso baliied. as toinsure'the'maximum of contactof thesources .of heat with the water tobeheated, completelyto utilize the. heat values" produced without undulyhampering combustion or interfering with the proper draft of the boiler.

.. .My invention still further relates "to a highly simplified form of.boiler which whil'e including allot the foregoing advantages; isinexpensiveto make andassemble. 1. r

r Inthe accompanying drawings"? j Fig. l represents afront elevation ofa boiler embodying my invention, 1

; Fig. 2 represents a section on line-2 2 of 1.

5,.Y5Fig. 3-represents a foreshortened diagrammatic and fragmentaryvertical :sectionalview showing details of construction, certain parts*beingcshown inielevationl: l i" Fig. 4 represents a section on line 4-4of Fig. 2.

Fig. 5 represents a section on line 55 of Fig. 3.

Fig. 6 represents a section on line 6-6 of Fig. 4.

Referring to the drawings, in which like reference characters indicatelike parts, my novel boiler consists generally of three units l, 2 and3, each of which is prefabricatedand assembled independently of theothers, all of said units being adapted for assembly with respect toeach other and with respect to a conventional base or foundation 4. Theunit I comprises a front waterhead 6 and a rear Water-head 1, saidwater-heads being interconnected by means of the relatively largeinclined water tubes 9. The water tubes 9,

- stack l5.

0f theinventioni Each of the sections'2' and 3 is formed of -a drum 2which extends the entire length of the boiler from the-front head 6'tothe rear head 'l, each of said drums being provided with the fire tubesI3 which open at their front' end into theismoke header M and atthe'irrea'r end' into thestack I5. 'Each .of. the drums .12. communicates atits front andrear ends withthe water-heads 6 and 1, as shown :at IS inFig. 2, so "that the'waterbf the heads 6zand 1 circulates freelythroughth'e JdrumsTlLI "IBrepresentsa baffle extendingfrom the from head6 inwardlyitosany. desired extent. withinthe boiler'so as to deflect thefire rearchamber 10. From the front smoke header the heated gases enterthe firetubes" l 3 inthe direction 0f the arrows 20 inFig'. Sand passthrough the fire tubes'l3 into the smoke stack [5. Deflection of theheated: gases, first; rearwardly by the bafile 6|.8,andthenf'orwardlyinto the fi'ont s'moke head'- er 1.4 by the bafilel9,and the passage of the gases through thefire tubes 13 in the drums i2,insures completsxhaustionbf the'heatof the gases and the transfer 2 oftheir heat to the waterin the drums l2 prior to their-escape through thesmoke The boiler may be provided with any suitable insulation 2| on thesides.

It will thus be seen that the water is first exposed to the direct flamein the fire box with the tubes 9 arranged as shown at A, B and C, inFig. 5, as well as in the front and rear waterheads 6 and I. This causesthe water to circulate upwardly in the tubes 9 from the rear head 1towards the front head 6, the flames being then directed upwardlyagainst and between the two units or drums l 2 and then through the firetubes l3 which extend through the drums I2 and are surrounded by thewater therein.

It will further be seen that by my novel arrangement I am enabled. tofabricate the units 1, 2 and 3 separately and transport them sepathroughsaid water drums and communicating with said smoke header and said rearsmoke stack, and means for preventing communication between the fireboxand said rear smoke stack, whereby the products of combustion are com--pelled to rise through said lower unit between and around said upperwater drums into said front smoke header and throughsaid fire tubes intosaid rear smoke stack.

2. A steel boiler, comprising an integral lower unit consisting of frontand rear. water-heads extending the entire width of. the; boiler, andinclined water tubes interconnecting. said front and rear Water-heads,said water tubes being arranged along the sides and top of said lowerunit, a plurality of spaced upper water drums welded on to andcommunicating with said front and rear water-heads at the upper endsthereof, a, smoke header coinciding with the front of said upper waterdrums, a smoke stack coinciding with the rear ends of said upper water.drums, fire tubes extending through. said water drums and communicatingwith said front smoke header and said rearasmoke stack, means forpreventing com.- m nication between the fire: box andsaid rear smokestack,,whereby the products of combustion arev compelled to rise throughsaid lower unit between and around said upper waterdrums into said frontsmoke header and through said fire tubes into said rear smoke stack, anda. bafile extending rearwardly from said front water-head intermediatesaid. lower unit and said upper water drums.

3.. A boiler comprising a, lower unit adapted to be; positioned on aprepared foundation and conof afront water-head extending the entirewidth of. the boiler, a rear water-head extending theentire width of theboiler,.and relatively large, inclined water tubes interconnecting'saidfront rear water-heads, and. one. or more upper water drums welded on tosaid lower unit, each ofsaid upper water drums having fire tubes pass:-ing therethrough and communicating with the combustion chamber of theboiler, and each of said drums being also connected at its front andrear ends with said front and rear water-heads.

4. A boiler comprising a lower unit adapted to be positioned on aprepared foundation and consisting of a front water-head extending theentire width of the boiler, a rear water-head extending the entire widthof the boiler, and relatively large, inclined water tubesinterconnecting said front and rear water-heads, one or more upper waterdrums welded on tolsaid lower unit, each of said upper water drumshaving fire tubes passing therethrough and communicating with thecombustion chamber of said boiler, each of said drums being connected atits front and rear ends with said front and rear water-heads, and abaffie extending rearwardly from the front water-head of said lower unitbelow said upper water drums.

5. A boiler comprising a lower unit adapted to be positioned on aprepared foundation and consisting of a front water-head extending theentire width of. the boiler, a rear water-head extending the. entirewidth of the boiler, and relatively large, inclined water tubesinterconnecting said front and rear water-heads, and one or more upperwaterdrums welded on' to said lower unit, each of said upper water drumshaving fire tubes passing therethrough and communicatingwith thecombustion chamber of the boiler, and each of said drums being alsoconnected at its front and rear ends with said front and rearwater-heads,

and a smoke header communicating with the front ends of. the" fire tubesin said upper drums, the: rear ends of said fire tubes leading into asmoke stack.

6:. A boiler comprising a lower unit adapted to be positioned on aprepared foundation and consisting ofla front water-head extending theentire .width of the boiler, a rear water-head extending .theentirewidth of the boiler, and relatively large, inclined water tubesinterconnecting said front and,.rear water-heads, and one or more upperWater drums welded on to. said lower unit, each of'said upperwater drumshaving fire tubes passing therethrough and communicating with. the

combustion. chamber of the boiler, and each of said drums being alsoconnected at its front and rear ends with said front and rearwater-heads, a smoke header communicating with the front ends of thefire tubes in said upper water drums, a smoke stack communicating withthe rear ends of said fire tubes, and a bafile for preventing theescape, of the products of combustion directly into said smoke; stack.HOWARD G, SMITH.

